Rotary telescopic variable-amplitude back-twist device for submarine cable laying

Abstract

The utility model provides a rotary telescopic variable amplitude back-twist device for submarine cable laying, which relates to the technical field of submarine cable laying and comprises a full-rotation rack, a support arm frame, a first cable guide arm frame, a second cable guide arm frame, a trunk beam and a tensioner, the support arm frame is arranged on the full-rotation rack, the first cable guide arm frame is fixedly arranged on one side of the top of the support arm frame, and the second cable guide arm frame is fixedly arranged on the other side of the top of the support arm frame. A second fairlead arm frame is movably arranged on the other side of the top of the supporting arm frame, a trunk beam is installed at one end of the second fairlead arm frame in a hinged mode, a variable-amplitude driving mechanism is connected with the trunk beam, and a tensioner is arranged at the position, between the first fairlead arm frame and the second fairlead arm frame, of the top of the full-rotation machine frame; the second fairlead arm support can be driven by the telescopic oil cylinder to horizontally stretch out and draw back on the supporting arm support, the trunk beam can conduct amplitude variation of 0-20 degrees at one end of the second fairlead arm support, all components are arranged on the full-rotation machine frame and can rotate by 360 degrees along with the full-rotation machine frame, the position of an output cable is adjusted on site, and good universality and adaptability are achieved.

Description

Technical Field

[0001] This utility model relates to the field of submarine cable laying technology, and in particular to a rotary telescopic amplitude-changing and torsion-reducing device for submarine cable laying. Background Technology

[0002] Submarine cables (or submarine cables) are cables laid on the seabed to enable cross-ocean communication, power transmission, and other functions. They are an important component of modern marine engineering and global communication networks. Submarine cables are divided into communication cables and power cables. Communication cables are mainly used for the Internet, telephone, and data transmission, with fiber optic communication as their core technology. Power cables are used for island power supply, offshore oil and gas platforms, offshore wind power, seabed exploration, and marine scientific research.

[0003] Currently, large-diameter, high-voltage submarine cables are widely used, making the untwisting problem during construction increasingly important. Traditional untwisting devices are mostly fixed structures. Due to significant differences in equipment layout on each auxiliary cable vessel, the output cable position of the untwisting frame must be specially designed and manufactured according to the requirements of each vessel, resulting in poor versatility and increased production costs for enterprises. Therefore, this invention proposes a rotary telescopic luffing untwisting device for submarine cable laying to address the shortcomings of existing technologies. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this invention is to provide a rotary telescopic luffing and torsion-reducing device for submarine cable laying. The second cable guide arm can be horizontally extended and retracted on the support arm via a telescopic cylinder. The trunk beam is hinged to one end of the second cable guide arm and driven by a luffing cylinder. The trunk beam can luff from 0 to 20° at one end of the second cable guide arm. All components are mounted on a 360° rotating frame, allowing it to rotate 360° with the frame. This gives the device high flexibility in submarine cable laying. The device is bolted in multiple places, allowing the output cable position to be adjusted on-site according to deck equipment layout requirements, demonstrating excellent versatility and adaptability.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A rotary telescopic luffing and untwisting device for submarine cable laying includes a swivel frame, a support boom, a first cable guide boom, a second cable guide boom, a trunk beam, and a tensioner. The support boom is mounted on the swivel frame. The first cable guide boom is fixedly mounted on one side of the top of the support boom, and the second cable guide boom is movably mounted on the other side of the top of the support boom. A telescopic cylinder is mounted on the support boom, and the output end of the telescopic cylinder is connected to the side wall of the second cable guide boom. A trunk beam is hinged to one end of the second cable guide boom. A luffing drive mechanism is mounted on the second cable guide boom at the trunk beam, and the luffing drive mechanism is connected to the trunk beam. A tensioner is mounted on the top of the swivel frame between the first cable guide boom and the second cable guide boom.

[0007] The first cable guide arm, the second cable guide arm, and the inside of the elephant trunk beam form a submarine cable slide, and the submarine cable guide mechanism is provided inside the submarine cable slide.

[0008] A further improvement is that the full-rotation frame includes a rotation support base, a rotating platform, and a rotation drive hydraulic motor. The rotating platform is rotatably mounted on the rotation support base via a main shaft, which is driven by the rotation drive hydraulic motor. The support arm is connected to the rotating platform by bolts.

[0009] A further improvement is that the luffing drive mechanism includes a connecting bracket and a luffing drive cylinder. The connecting bracket is provided on the second cable guide arm, and the luffing drive cylinder is hinged on the connecting bracket. The output end of the luffing drive cylinder is hinged to the bottom of the elephant trunk beam.

[0010] A further improvement is that the tensioner includes a support frame, a first mounting frame, a second mounting frame, an upper track assembly, and a lower track assembly. The support frame is mounted on the top of the rotating platform. The support frame has a first mounting frame and a second mounting frame inside. The upper track assembly is mounted on the first mounting frame, and the lower track assembly is mounted on the second mounting frame. The first mounting frame is slidably connected to the support frame, and the second mounting frame is fixedly connected to the support frame.

[0011] A further improvement is that a clamping cylinder is provided on the support frame, and the output end of the clamping cylinder is connected to the first mounting frame.

[0012] A further improvement is that the submarine cable guiding mechanism includes horizontal rollers and vertical rollers, with horizontal rollers rotatably arranged at the bottom inside the submarine cable slide and vertical rollers rotatably arranged on both sides inside the submarine cable slide.

[0013] The beneficial effects of this utility model are as follows: This utility model, by setting up a rotary telescopic luffing and torsion-reducing device composed of a full-rotation frame, a support boom, a first cable guide boom, a second cable guide boom, an elephant trunk beam, and a tensioner, allows the second cable guide boom to extend and retract horizontally on the support boom via a telescopic cylinder. The elephant trunk beam is hinged to one end of the second cable guide boom and driven by a luffing cylinder, allowing the elephant trunk beam to luff from 0 to 20° at one end of the second cable guide boom. All components are set on the full-rotation frame and can rotate 360° with the full-rotation frame, giving this utility model device the advantage of high flexibility when used for submarine cable laying. The device is installed in multiple places with bolts, allowing the output cable position to be adjusted on-site according to the deck equipment layout requirements, exhibiting excellent versatility and adaptability, improving efficiency, and reducing the adjustment time for ship machinery operations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a front view schematic diagram of the full-rotation frame structure of this utility model;

[0016] Figure 3 This is a side view of the tensioner structure of this utility model;

[0017] Figure 4 This is a schematic front view of the tensioner structure of this utility model;

[0018] Figure 5 This is a partially enlarged schematic diagram of the elephant trunk beam mounting structure of this utility model;

[0019] Figure 6 This is a front view schematic diagram illustrating the working principle of the structure of this utility model;

[0020] Figure 7 This is a top view schematic diagram illustrating the working principle of the present invention.

[0021] The components include: 1. Full-rotation frame; 101. Rotation support base; 102. Rotary platform; 103. Rotation drive hydraulic motor; 2. Support boom; 3. First cable guide boom; 4. Second cable guide boom; 5. Trunk beam; 6. Tensioner; 601. Support platform; 602. First mounting frame; 603. Second mounting frame; 604. Upper track assembly; 605. Lower track assembly; 606. Clamping cylinder; 7. Telescopic cylinder; 8. Connecting bracket; 9. Luffing drive cylinder; 10. Horizontal idler roller; 11. Vertical idler roller. Detailed Implementation

[0022] To enhance understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are for illustrative purposes only and do not constitute a limitation on the scope of protection of this utility model.

[0023] according to Figure 1-7 As shown, this embodiment proposes a rotary telescopic luffing and untwisting device for submarine cable laying, including a full-rotation frame 1, a support boom 2, a first cable guide boom 3, a second cable guide boom 4, a trunk beam 5, and a tensioner 6. The full-rotation frame 1 is equipped with the support boom 2. The first cable guide boom 3 is fixedly mounted on one side of the top of the support boom 2, and the second cable guide boom 4 is movably mounted on the other side of the top of the support boom 2. The support boom 2 is equipped with a telescopic cylinder 7, and the telescopic cylinder 7 outputs... The first cable guide arm 3 is connected to the side wall of the second cable guide arm 4. One end of the second cable guide arm 4 is hinged to an elephant trunk beam 5. The second cable guide arm 4 at the elephant trunk beam 5 is provided with a luffing drive mechanism, which is connected to the elephant trunk beam 5. The top of the full-rotation frame 1 between the first cable guide arm 3 and the second cable guide arm 4 is provided with a tensioner 6. The first cable guide arm 3, the second cable guide arm 4 and the elephant trunk beam 5 form a submarine cable slide, and a submarine cable guiding mechanism is provided inside the submarine cable slide.

[0024] When using the rotary telescopic luffing untwisting device for submarine cable laying, the swivel frame 1 of this invention is arranged and fixed according to the deck equipment layout requirements. Under the combined action of external traction force and tensioner 6, the cable enters the second cable guide arm 4 from the first guide arm 3 via the tensioner 6. When it is necessary to change the position of the cable entering the cable storage reel, the swivel frame 1 is controlled to rotate, driving the first guide arm 3 and the second guide arm 4, which are installed on the support arm 2, to rotate synchronously. The telescopic cylinder 7 can control the telescopic length of the second guide arm 4 on the support arm 2. The trunk beam 5 is hinged to the second guide arm 4 and can be driven by the luffing drive mechanism to adjust the amplitude, so that the cable exit angle at the bottom of the submarine cable can be varied within 0~20°, allowing the cable to transition smoothly. When the desired position is reached, the brake activates to stop. Limit sensor devices are installed throughout the telescopic stroke, rotation, and luffing range of the entire untwisting device.

[0025] The fully rotating frame 1 includes a rotating support base 101, a rotating platform 102, and a rotating drive hydraulic motor 103. The rotating platform 102 is rotatably mounted on the rotating support base 101 via a main shaft, which is driven by the rotating drive hydraulic motor 103. The support arm 2 is bolted to the rotating platform 102. By driving the rotating drive hydraulic motor 103, the main shaft can be driven to rotate, causing the rotating platform 102 mounted on the main shaft to rotate on the rotating support base 101.

[0026] The luffing drive mechanism includes a connecting bracket 8 and a luffing drive cylinder 9. The connecting bracket 8 is mounted on the second cable guide arm 4, and the luffing drive cylinder 9 is hinged to the connecting bracket 8. The output end of the luffing drive cylinder 9 is hinged to the bottom of the trunk beam 5. When the luffing drive cylinder 9 extends or retracts, it drives the trunk beam 5 to rotate at one end of the second cable guide arm 4 by a corresponding angle, thereby achieving luffing.

[0027] The tensioner 6 includes a support frame 601, a first mounting frame 602, a second mounting frame 603, an upper track assembly 604, and a lower track assembly 605. The support frame 601 is mounted on the top of the rotating platform 102. The first mounting frame 602 and the second mounting frame 603 are located inside the support frame 601. The upper track assembly 604 is mounted on the first mounting frame 602, and the lower track assembly 605 is mounted on the second mounting frame 603. The first mounting frame 602 is slidably connected to the support frame 601, and the second mounting frame 603 is fixedly connected to the support frame 601. A clamping cylinder 606 is provided on the support frame 601, and the output end of the clamping cylinder 606 is connected to the first mounting frame 602. After the clamping cylinder 606 retracts, it moves the first mounting frame 602 closer to the second mounting frame 603. Then, the upper track assembly 604 and the lower track assembly 605 work together to tension the submarine cable.

[0028] The submarine cable guiding mechanism includes a horizontal idler roller 10 and a vertical idler roller 11. The horizontal idler roller 10 is rotatably arranged at the bottom inside the submarine cable track, and the vertical idler roller 11 is rotatably arranged on both sides inside the submarine cable track. This utility model can guide and limit the movement of the submarine cable inside the submarine cable track by setting the horizontal idler roller 10 and the vertical idler roller 11, so as to ensure the normal movement of the submarine cable.

[0029] This invention features a rotary telescopic luffing and torsion-reducing device consisting of a rotatable frame 1, a support boom 2, a first cable guide boom 3, a second cable guide boom 4, a trunk beam 5, and a tensioner 6. The second cable guide boom 4 can be driven by a telescopic cylinder 7 to extend and retract horizontally on the support boom 2. The trunk beam 5 is hinged to one end of the second cable guide boom 4 and driven by a luffing cylinder 9, allowing it to luff from 0 to 20° at one end of the second cable guide boom 4. All components are mounted on the rotatable frame 1 and can rotate 360° with it. This gives the device high flexibility when used for submarine cable laying. The device is bolted in multiple places, allowing for on-site adjustment of the output cable position according to deck equipment layout requirements. It has excellent versatility and adaptability, improving efficiency and reducing the adjustment time for ship machinery operations.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary telescopic variable amplitude de-torque device for submarine cable laying, characterized in that: The utility model provides a kind of cable laying device, including full slewing frame (1), support arm frame (2), first cable guide arm frame (3), second cable guide arm frame (4), elephant trunk (5) and tensioner (6), support arm frame (2) is equipped on the full slewing frame (1), first cable guide arm frame (3) is fixed and arranged on one side of support arm frame (2) top, second cable guide arm frame (4) is movably arranged on the other side of support arm frame (2) top, telescopic oil cylinder (7) is equipped on support arm frame (2), and the output end of telescopic oil cylinder (7) is connected with the side wall of second cable guide arm frame (4), and elephant trunk (5) is hingedly installed on one end of second cable guide arm frame (4), and variable-amplitude drive mechanism is equipped on the second cable guide arm frame (4) of elephant trunk (5), and variable-amplitude drive mechanism is connected with elephant trunk (5), and tensioner (6) is equipped on the top of full slewing frame (1) between first cable guide arm frame (3) and second cable guide arm frame (4). First cable guide arm frame (3), second cable guide arm frame (4) and elephant trunk (5) form submarine cable slide way inside, and submarine cable guide mechanism is equipped inside submarine cable slide way.

2. A rotary telescopic tensioner for laying a submarine cable according to claim 1, characterized in that: Full slewing frame (1) includes slewing support seat (101), rotary stand (102) and slewing drive hydraulic motor (103), rotary stand (102) is rotatably arranged on slewing support seat (101) by main shaft, and main shaft is driven by slewing drive hydraulic motor (103), and support arm frame (2) is connected with rotary stand (102) by bolt.

3. A rotary telescopic tensioner for laying a submarine cable according to claim 1, characterized in that: Variable-amplitude drive mechanism includes connecting support (8) and variable-amplitude drive oil cylinder (9), connecting support (8) is arranged on second cable guide arm frame (4), and variable-amplitude drive oil cylinder (9) is hingedly connected on connecting support (8), and the output end of variable-amplitude drive oil cylinder (9) is hingedly connected with the bottom of elephant trunk (5).

4. A rotary telescopic tensioner for laying a submarine cable according to claim 1, characterized in that: Tensioner (6) includes support stand (601), first mounting bracket (602), second mounting bracket (603), upper track assembly (604) and lower track assembly (605), support stand (601) is installed on the top of rotary stand (102), first mounting bracket (602) and second mounting bracket (603) are arranged inside support stand (601), upper track assembly (604) is installed on first mounting bracket (602), lower track assembly (605) is installed on second mounting bracket (603), first mounting bracket (602) is slidably connected with support stand (601), and second mounting bracket (603) is fixedly connected with support stand (601).

5. A rotary telescopic tensioner for laying a submarine cable according to claim 4, characterized in that: Compression oil cylinder (606) is arranged on support stand (601), and the output end of compression oil cylinder (606) is connected with first mounting bracket (602).

6. A rotary telescopic swing-away de-tensioning device for laying a submarine cable according to claim 1, characterized in that: Submarine cable guide mechanism includes horizontal roller (10) and vertical roller (11), horizontal roller (10) is rotatably arranged inside submarine cable slide way lower side, and vertical roller (11) is rotatably arranged inside submarine cable slide way two sides.

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